Evaluates: MAX5976A/MAX5976B 19-5730 Rev 0 1/11 MAX5976B Evaluation Kit General Description Features The MAX5976B evaluation kit (EV kit) provides a proven S 2.7V to 18V Operating-Voltage Range design to evaluate the MAX5976B hot-swap controller S Up to 7A Configurable Load-Current Capability with an integrated 7A MOSFET. The EV kit is configured S Banana Jacks for Input and Output Voltage to pass 7A into a 2.7V to 18V hot-swap application, thus S Selectable/Configurable Circuit-Breaker Threshold providing a fully integrated solution. The EV kit uses the MAX5976BETE+ in a 5mm x 5mm x 0.8mm, 16-pin TQFN S Selectable/Configurable Undervoltage Lockout package on a proven four-layer PCB design. S Fault and Power-Good LED Indicators The EV kit can also be used to evaluate the MAX5976A S Slide Switches and Input Pads for Enable Inputs after IC replacement of U1. S Proven PCB Layout S Fully Assembled and Tested Ordering Information PART TYPE MAX5976BEVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION GND (x2), VIN, Uninsulated banana jacks, 1F Q10%, 25V X7R ceramic 4 VOUT panel mount C1 1 capacitor (0603) Murata GRM188R71E105K JU1 1 3-pin header JU2 1 2-pin header 10F Q20%, 25V X5R ceramic C2, C3, C4 3 capacitors (1206) 60V, 115mA n-channel MOSFET Murata GRM31CR61E106M N1 1 (SOT23) Fairchild 2N7002 1000pF Q10%, 50V X7R ceramic C5 1 capacitor (0603) -60V, -0.18A, p-channel Murata GRM188R71H102K P1 1 MOSFET (SOT23) Fairchild NDS0605 C6 0 Not installed, capacitor (1206) R1R5 5 100kI Q5% resistors (0603) 18V, 600W transient voltage D1 1 suppressor (SMB) R6, R7 2 1kI Q5% resistors (0805) Fairchild SMBJ18A R8 1 40.2kI Q1% resistor (0805) R9 1 50kI SMT cermet trimmer 20V, 1A Schottky rectifier (SMA) D2 1 Fairchild SS12 R10 0 Not installed, resistor (0603) SW1, SW2, SPDT slide switches, 2.5mm 5.1V, 250mA zener diode 3 SW3 centers D3 1 (SOT23) Fairchild BZX84C5V1 Hot-swap controller D4 1 Green LED (1206) U1 1 (16 TQFN-EP*) Maxim MAX5976BETE+ D5 1 Red LED (1206) 2 Shunts FAULT, PG, 3 Test points, white REG PCB: MAX5976B EVALUATION 1 KIT+ GND 2 Test points, black *EP = Exposed pad. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX5976B Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Note: Indicate that you are using the MAX5976B when contacting these component suppliers. Table 1. Default Shunt Positions (JU1, JU2) Quick Start SHUNT MAX5976B EV KIT Required Equipment JUMPER POSITION PIN FUNCTION MAX5976B EV kit CB to GND 12V, 10A DC power supply Current limit is JU1 1-2 (through set to 7A. Voltmeter resistor R8) Procedure Undervoltage- ON1 to VIN The EV kit is fully assembled and tested. Follow the lockout JU2 Installed (through steps below to verify board operation. Caution: Do not threshold is resistor R1) turn on the power supply until all connections are set to 2.5V. completed. 1) Verify that shunts are installed in their default position Table 2. Default Switch Positions for jumpers JU1 and JU2, as shown in Table 1. (SW1, SW2, SW3) 2) Verify that slide switches SW1, SW2, and SW3 are set in their default position, as shown in Table 2. SWITCH MAX5976B EV KIT SWITCH 3) Turn on the power supply and set the supply to 12V, POSITION PIN OUTPUT then disable the power supply. ON1 to VIN 4) Connect the positive terminal of the power supply to the (through resis- SW1 1-2 VIN banana jack on the EV kit. Connect the negative tor R1 and terminal of the power supply to the GND banana jack. jumper JU2) Enabled 5) Enable the power supply. SW2 2-3 ON2 to GND 6) Verify that the voltage between the OUT and GND PRESDET to banana jacks is 12V. SW3 2-3 GND 7) Verify that the voltage at the internal regulator voltage test point (REG) is 2.6V. Jumper Selection 8) The EV kit is now ready for additional evaluation. Circuit Breaker (CB) Jumper JU1 sets the current limit for the internal circuit Detailed Description of Hardware breaker (CB) of the device. The CB pin can be connected to a fixed resistor (R8) or a potentiometer (R9) to set the The MAX5976B EV kit provides a proven design to current limit. See Table 3 for shunt positions. evaluate the MAX5976B hot-swap controller with an integrated 7A MOSFET. The EV kit can be conveniently Undervoltage Lockout (ON1) connected between the system power and the load The EV kit provides an option to configure the undervolt- using the banana jacks provided for the input and output age-lockout threshold. The undervoltage-lockout threshold voltage. PCB pads are provided to monitor and control for the device is configured by the VIN voltage level divided the device signals. The EV kit operates between 2.7V by R1 and R10 at the ON1 pin. Set slide switch SW1 to and 18V with up to 7A load-current capability. position 1-2 before configuring the undervoltage-lockout threshold. See Table 4 for JU2 shunt positions. Evaluating the MAX5976A The EV kit can also be used to evaluate the MAX5976A Slide Switches after IC replacement of U1 with the MAX5976AETE+. The Active-High Enable (ON1) MAX5976A is pin-to-pin compatible with the MAX5976B. Slide switch SW1 controls the active-high enable pin Refer to the MAX5976A/MAX5976B IC data sheet for (ON1) on the device. See Table 5 for switch positions. details on the MAX5976A. 2 Evaluates: MAX5976A/MAX5976B